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PHP2Shell, explained: the two critical PHP bugs every team needs to patch
On October 21, 2026 , PHP shipped an emergency security release for two critical vulnerabilities in the PHP runtime itself . The pair is being called PHP2Shell :
CVE-2026-109618
CVE-2026-109619
Both have a 9.2 Critical CVSS score. Both can expose vulnerable PHP services to unauthenticated remote code execution and memory disclosure. And neither one is fixed by updating Laravel, WordPress, Symfony, a Composer package, or your application code.
This is the important ...
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